Disk-cover for job-printing presses



( No Model.) G. E. ADAMSON.

. DISK COVER FOR JOB PRINTING PRESSBS. 'N0. 581;293. Patented Dec.25,1894.

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. State of Indiana, have invented a new and use- PATENT OF-Frc.

CHARLES ELLSWORTH ADAMSON, OF MUN OIE, INDIANA.

DISK-COVER FOR JOB-PRINTING PRES SE8.

SPECIFICATION forming part of Letters Patent No. 531,293, dated December25, 1894.

Application filed January 8, 189% Serial No. 4 6,17 (N mo l-l To aZZwhom it may concern:

Be it known that I, CHARLES ELLswoR'rH ADAMSON, a citizen of the UnitedStates, residing at Muncie, in-the county of Delaware and ful Disk-Coverfor Job-Printing Presses, of which the following is a specification.

My invention relates to a cover for the ink disk of job presses that areconstructed with a thin fiat circular disk on which the printing ink isdistributed by the press rollers, especially such presses as arecommonly known as the Gordon, and the objects of my invention are,first, to provide a thin cloth cover for the ink disk, to be used inworking thin running ink, such as copying ink and others that do notwork well on an iron disk; second, to construct a flexible cover havingits under side of rubber or impervious material and the upper side ofcloth for retaining the ink, and third, to construct a flexible coverwith a rubber'edge made so as to clamp and hold itself to the ink disk.I attain these objects by the mechanism illustrated by the accompanyingdrawings, in which- Figure lis a perspective view of the upper part of aGordon job press, showing the circular ink disk covered with one. of mycovers. Fig. 2, is a cross section of the disk and cover taken on linesX X of Fig. 1. Fig. 3, is an enlarged view of one end of Fig. 2. Fig. 4,is a section of one edge of a cover showing the rubber edge and thecover made in two parts and glued together. Fig. 5, is a view of theunder side of a part of a disk with a cover secured thereon showing amodified form of the fastening edge, and Fig. "6, is a view showing thetop of a complete cover with one edge turned up, exposing the selfclamping edge which is formed on its under side.

Similar letters refer to similar parts throughout the several views.

The cover'consists of three essential parts, but they are combined, allin one piece. The upper partA is of asoft cloth or felt covering theentire upper surface of the cover. Below this cloth is a thin sheet orlayer of impervious material B which is made fast to the cloth in theprocess of manufacture, so that the cover becomes one solid piece. Theouter edge of the rubber part of the cover is curved downward having acord or enlarged edging 0 formed on the inner edge, all as shown inFigs. 2, 3, and 6. This edge 0 serves to clamp under the edge of theiron disk D and to hold fully is shown by a half disk in Fig. 5. In

this construction, when the disk cover is out out of rubber cloth,strips E are left around the periphery of the cover every few inches,and the, ends of which are turned over and stitched, forming a loopthrough which the cord or tape F is passed drawing the ends all towardthe center of the cover, thereby holding it firm on the disk, the sameas the rubber edging. V

In Fig. 4, the rubber edging is shown as being made separate from themain cover. This may prove quite economical in the manufacture of thecover, as the part A, B, may be cut out of rubber cloth and the edgingglued orcemented to it at the seam G, all as shown in the said figure.

My covers may be used for water as well as inks and they may be placedon a disk without washing it, which saves time of washing the iron diskin changing the press from one color to another, also saving the inkwhich would have to be washed off. The ink on the closely rious sizedjob presses having round or square disks.

Having thus described my invention, I claim the following and desire tosecure the same by Letters Patent:

1. The combination with the ink distributing disk of a printing press,of a detachable cove-r having an ink retaining outer surface and meansfor securing the cover to the disk, substantially as described. V 2. Thecombination with the ink distributing disk of a printing press, of adetachable flexible cover having an ink retaining outer surface and aband on its periphery for seen ring the cover to the disk, substantiallyas described.

3. The combination with the ink distributing disk of a printing press,of a detachable flexible cover having an ink retaining outer surface, animpervious lining and means for securing the cover to the disk,substantially as described.

4. The combination with the ink distribu- 1'0 ting disk of a printingpress, of a detachable impervious cover having an ink retaining surfaceand means for securing the cover to the disk, substantially asdescribed.

CHARLES ELLSWOR'IH ADAMSON.

Witnesses:

E. J. TOMLINSON, E. E. DAUGHERTY.

